Memory type hazardous gas alarm control system

Abstract

The invention discloses a memory type hazardous gas alarm control system. Through introducing a remote monitoring center and a superior valve control device to the memory type hazardous gas alarm control system, the defect that a leakage risk at the rear end of a pipeline valve is prevented by only closing an indoor pipeline valve in the prior art is overcome, and for the leakage at the front end of the pipeline valve, an outdoor pipeline valve is closed only if the concentration of the hazardous gas monitored by the remote monitoring center is up to a preset threshold value, thus, the leakage risk at the front end of the pipeline valve is thoroughly avoided, and the personal and property loss is reduced as much as possible.

Description

technical field [0001] The invention relates to the technical field of safety assurance in the electronic industry, in particular to a memory-type dangerous gas alarm control system. Background technique [0002] In today's era of rapid economic development, users have higher and higher requirements for safety, so various safety protection devices emerge in an endless stream. Especially in households, gas appliances supplied by gas cylinders or gas pipelines often cause gas leakage due to aging pipelines or malfunctions of the stove. The gas is flammable, explosive and can cause poisoning. Serious accidents that cause personal injury and property damage. Existing multiple gas leakage automatic alarm devices on the market. [0003] Reference 1 (patent application number: CN200620027219.1) discloses a memory type combustible gas detection alarm. figure 1 It is a schematic diagram of a memory type combustible gas detection alarm in the prior art. Such as figure 1 As shown,...

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Problems solved by technology

[0004] In reference 1, the memory-type combustible gas detection alarm uses an external storage device U2 independent of the microcontroller 102, and the data is transmitted through the SCL and SDA buses, which not only reduces the utilization of space, but also increases the area of ​​the circuit board. Increase the cost; the sum of the cost of separation of U1 and U2 is higher than the cost of the U2 single-chip microcomputer integrated in U1 to achieve the same effect; between U1 and U2, SCL and SDA buses are used to undertake the data transmission between the single-chip microcomputer and the memory, and the bus Exposed and easily damaged, reducing safety and reliability

At the same time, the data and information are all stored in the U2 of the alarm, so that when an accident occurs on the spot, especially a fire, the black box storing the data is easy to be lost and damaged; Combustible gas leakage occurs when there is a person, the alarm effect is not obvious and it is easy to delay the adoption of emergency measures

Although there is a relay J1 in the memory-type combustible gas detection alarm mentioned above, the relay J1 can be linked with the pipeline valve to cut off the pipeline behind the valve. If the pipeline leaks at the front end of the valve, although the alarm and the pipeline valve operate normally, But can't stop the leak, still poses a hazard

[0005] In the process of implementing the present invention, the inventor found the following technical problems in the prior art: Although the alarm and the relay are linked to close the pipeline valve when the gas leaks, the danger of leakage in the pipeline at the front end of the valve cannot be completely avoided

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